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post #11 of 39
you forgot to draw up the gfx card and any other cards which will get in the way =O
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post #12 of 39
Remember that power supplies always vent outside the case. I think you are overthinking the airflow though. Just have intake on some combination of front, bottom, or side and exhaust at the rear and top.
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post #13 of 39
High Airflow < Smooth Airflow.

I don't think this will work much better than a standard ATX setup to be honest.

I would do some fluid dynamics testing for you, but I don't have the time at the moment. Suffice to say this will not work very well, especially with fast fans.

There would just be too much turbulence.
Edited by Cepheus - 1/11/10 at 3:52am
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post #14 of 39
Thread Starter 
Quote:
Originally Posted by CTRLurself [Knyte Custom] View Post
more fans is not always better, it's about smooth continuous airflow.

Air in the bottom/front, out the top/back.

--Flip the fan in the PSU so that is draws air in vertically through it's bottom and then turns it towards the back (make the fan exhaust not intake).
--Make the fans on the back exhaust
--put a fan in the front bottom intake
--Remove the front most top fan (above the PSU) as it will cause negative pressure in the case as there is no good orientation (intake or exhaust) for it
--Orient your Mugen 2 to blow air up out the top (pull is more important than push here)
--If you use 3$ fans this will either sound like a hovercraft or it's not going to move air regardless of the number. Get some decent fans and a fan controller for the ones that won't plug into the mobo (or just go for antec tri-cools)
--In fact, just do Antec Tricools to make tweaking air flow rates easier.

After everything (ONLY fans, PSU, HSF and a cardboard placeholder for your GPU - NOT the mobo, hdds etc.) is in the case, jumper the PSU so the fans all come on without the computer booting, get a smoke machine, fill it with mineral oil (which is non-conductive) and blow smoke on the lowest setting into different intakes and see where it flows to. Make sure there are no swirls in your flow and if there are tweak fans speeds until they go away. These are called stagnation points and they are BAD for cooling systems.

Once you are satisfied that you have laminar flow through the case, boot it and benchmark the hell out of it.
Thanks! That was really helpful, especially the smoke machine part. I already own one (for haloween), so I will definitely try that.

Regarding the cheap $3 fans, I pan on buying some High speed Yate Loons from Jab-Tech, and making a 12v/off/5v toggle switch. I've heard great things about them so I figured I'd give them a shot.

I planned the crazy bottom intake/ top exhaust idea thinking it would make for some pretty smooth airflow. The Only place I think there will be turbulence is where the bottom intakes blow into the GPU. I was thinking hopefully that whatever air didn't run into the GPU would hug the side panel and continue upwards and into the HS.

I think I'm going to make some more cardboard mock-ups so I can try to visualize things a bit better (and use them for the smoke machine test!)

I think you deserve a rep for that post!
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post #15 of 39
Looking for ridiculous air flow in a case?



Look no further
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post #16 of 39
I would go here man...

post #17 of 39
Thread Starter 
Quote:
Originally Posted by Cepheus View Post
High Airflow < Smooth Airflow.

I don't think this will work much better than a standard ATX setup to be honest.

I would do some fluid dynamics testing for you, but I don't have the time at the moment. Suffice to say this will not work very well, especially with fast fans.

There would just be too much turbulence.

I'm not sure It will work better either, but heck, its worth a try at least!

I'm going to do some airflow tests with a smoke machine as someone else suggested, and see how it flows.


Based on my knowledge I can't see how this could cause more turbulence than the suggested airflow of my 690, which seems like it would be a complete mess. The "proper" way to set up fans calls for fans on every side, blowing into each others' airflow path.
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post #18 of 39
Thread Starter 
Quote:
Originally Posted by pluke the 2 View Post
I would go here man...

I was thinking of something similar to that, I think.

Care to explain?
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post #19 of 39
my case :




I have a Corsair heatsink,

it comes into my case:

My power supply sucks from the air and as the heat rises into the powersupply it spits it out of the back. So it goes up and out.

Two fans on the bottom have suction cups, they push air up, the bottom right arrow is a delta fan that intakes/ brings air inside, above that are 2 Cooler master fans that suck in through the harddrives, and at the very top i have 4 fans like a radiator that move hot air out of the case.
Edited by pluke the 2 - 1/11/10 at 12:35pm
post #20 of 39
Thread Starter 
Quote:
Originally Posted by pluke the 2 View Post
my case :




I have a Corsair heatsink,

it comes into my case:

My power supply sucks from the air and as the heat rises into the powersupply it spits it out of the back. So it goes up and out.

Two fans on the bottom have suction cups, they push air up, the bottom right arrow is a delta fan that intakes/ brings air inside, above that are 2 Cooler master fans that suck in through the harddrives, and at the very top i have 4 fans like a radiator that move hot air out of the case.
How do the two fans blowing directly into the GPU do for temps?

That is essentially what I wan't to do with my case, but probably a little more vertical airflow.
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